Street-sweeper.



A. S. EMERSON.

STREET SWEEPER.

APPLICATION FILED DEC. 26, 1907.

920,295. Patent g May 4, 1909.

Witnesses in ventar; flyra'l 5752/0301,

"nnrrnnsire rns rivrnnir or i llUl l,

Atrimn EMERSON,

OF NEW YORK, N. Y.

STREET-SWEEPER.

Specification of Letters Patent.

Patented lvl'ny 1909.

Application filed December 28, 1907. Serial No. 408,07-1.

taking care not only of the heavy portions of the sweepings but 01' the fine dust )nrticles.

In the drmviing accompanying and forming it part of this specification n practicable embodiment of a form of my invention is illus trated in side elevation with certain portions of the casing broken m x-try and certain of the ports shown in central section.

Various portions of the apparatus are mounted upon a carriage, designated in a general way by 1, which will be propelled in some convenient manner. In the present instance there is shown a motor 2 for supplying power, it being connected by means ot a chain to the driving wheel 4. A suitable sweepings receptru'rle 5 is mounted upon the carriage and is entered at the top at the fore and rear ends by conveyor casings 6 and 7 respectively. Each of these conveyor ensings has within it an endless belt 8 made up in such a manner that it will carry the sweepings up into the receptacle Those belts are shown as driven by means ol' suitable driving belt connections v. ith the driving wheel of the carriage, and will receive the sweepings from the plates 9. The forward brush 10 will throw its swcepings on to the plate .J npd will remove the larger portion of the dirt and other materials which are upon the street. These, will be carried up and thrown into the receptncleb. The brush. 1.] will remove the liner ortions of the material of the street, and a so these will be delivered into the rece t-aclc. A considerable amount of .dust wil arise as the sweepings are emptied into the receptacle, and particularly will this be the case where a double sweeping of the street is practiced, as with this mccluniisnr, and it is to telce care of the dust which is occasioned by the more thorough sweeping of the streets that one feature of this invention has to do.

In the form of dust collector herein illustrated there is a casing 12 mounted above the receptacle 5 which is divided into a number of compartments, and in the presen t-instencc produces two tortuous passages receiving the dust lrrdcn or r at u point comm unwitting with the center ol' the miceydnps receptacle and d ischmging it at the respective ends of the nmchine. A hood 13 is mounted within the sweepings receptacle and opens into passages l t lit which are formed by plate 15 end plate ilk-16. The air 't'rom err-ch oi' the posssgcs 1" will pass over the top of the plate 16 and be directed postthe end of the plate 17 into the body of water held between plate 16 and the plot-c in, the plate '17 projecting into this body titwnter. is the dust laden :r-ir passes through the water with consider able force, communiczrl ed to it by the blower 13 within the hoe-ll 13. it will :rgitntethe writer, sphashing; it up upon the plate I"; and by this menus :r considerable quantity of the dust will be removed. il'l' cours --v it it well known l'aict that the entrained dust curried by air will not be removed to any :rpprecia-l'lle extent by passing the air gently through :i body 0] water; but that it only when the air and water are clmrnod up together and each more or less lincly divided that the 'dust is rcn'un'cd. The air will pass over the top of the plate 13 and will he directed under the edge of the plateit) which projects into the body of water between the plates 15% and 20, and again the churninp zu-tiljmwill take place, removing dust which .rus not removed in the previous action, but which dust had become partially moistened, and then the air will puss over the top of the plate 30 and be directed :helow the lower edge of the plate 2]. which projects in the body of water between the plates 20 and when the oil, freed from oil dust, Willpnss out at the outlet 23. l l'zrtcr may be supplied as occasion may demand through suitable inlets 2- provided for the purpose. it will thus be seen that there is provided a: tortuous nir pussoge from the swecpings receptacle cmlmdying n number of traps contoininp water through u hirh writer the dust laden air from the sweepings receptacle will. be forced. 'l'o met-5st. the air in its agitation of the water it has been found best to have the air-puss in the some direction as the carriage, and parallel with the d' or tion of carriage movement and to have the writer traps disposed transversely ol' the line of movement so that as the carriage moves along whatever agitation ol the water is oc-' cesioned by the movement he vehicle will be in the general direction of the agitation caused by the passage of the air through the water. I

Having described my invention I claim:

1. The combination with a dust collecting means comprising a receptacle having an outlet adjacent to each end thereof, and a divided inlet centrally thereo'fi'said receptacle having at each side of said inlet alternately arranged partitions forming a tortuous passage to the outlet, the ends of all said partitions being immersed in a separating fluid, of meansloca'ted adjacent to said divided inlet for positively conveying the dust and dust laden air into said inletwhereby it will be divided and moved in opposite directions through said fluid to the Outlets.

2. The-combination witli a receptacle, a

I blower centrally located therein and means for delivering dust at opposite sides of the blower, of dust separating means comprising a receptacle having an outlet adjacent to each end thereof and a divided inlet centrally thereof and in communication with the discharge of the blower, said-receptacle having at each side of said inlet alternately arranged partitions forming a tortuous passage to the ALFRED S. EMERSON.

Witnesses: CHAs. L. RUssnLL, HENRY, E. GREENWOOD. 

